Car lock and seal



(Mode1.) 2 SheetsSheet 1. J. CHAPMAN. GAR LOCK AND SEAL. No. 319,194. Patented June 2, 1885.

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2 Sheets-Sheet 2.

(ModeL) J. CHAPMAN.

UAR LOGK AND SEAL.

No. 319,194. Patented June 2; 1885.

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JOSEPH CHAPMAN, OF DUBUQUE, IOYVA.

CAR LOCK AND SEAL.

June 2, 1885.

Application filed September 20, 1884. (Med e1.)

To all whom it may concern:

Be it known that I, J osnrn CHAPMAN, a citizen of the United States, and residing at Dubuque, in the county of Dubuque and State of Iowa, have invented certain new and useful Improvements in Car Locks and Seals, which are fully set forth in the following specification, reference being had to the accompanying drawings, in which- Figure 1 is an elevation of a lock embodying my invention; Fig. 2, a sectional view of the same on the line w :0 of Fig. 1; Fig. 3, an end elevation of the socket which receives the locking-bolt; Fig. 4:, a side elevation of the locking-bolt and its socket detached; Fig. 5, a sectional view on the line 2 z of Fig. 3; Fig. 6, a sectional view on the line 3/ 3 of Fig. 4 before the bolt is locked; Fig. 7, a similar view after the bolt is locked; Fig. 8, a side elevation of the locking -bolt detached; Fig. 9, a view of my preferred form of seal; Fig. 10, an elevation, on an enlarged scale, of a'modified form of my invention; Fig. 11, a sectional view of the same on the line y y of Fig. 10, and Figs. 12 and 13 detail views.

Like letters denote like parts in all the figures.

My invention relates to seal-locks for holding a door closed so'that it cannot be opened without destroying the seal or some other parts, and is more especially applicable to the doors of freight-cars and the like.

In the drawings, A indicates a portion of a freight-car door, and B the posts which form the jambs of the same, the greater portion of that part of the door between the jarnbs being broken out in Fig. 2. One of the posts B is provided with one or more apertures or recesscs, I), over the orifices of which may be placed the suitably-apertured plate b, for the purposes hereinafter set forth.

Near that end of the door which, when the door is closed, is adjacent to the post having the apertures b,which end I will call the rear end, is a transverse aperture of suitable shape or size to receive a bushing, G, which serves as a socket for the locking-bolt. This socket has attached to its outer end a disk, C, having in its face a seat, a, for the seal D, the disk being perforated, as shown at o, to receive a screw, 0", by which it and consequently the socket O are fastened to the door. In the bore of this socket are secured two L-shaped looking pieces, E, serving, in connection with spring-pins F, to lock the bolt G after it has been inserted, each piece consisting of a portion, 6, extending in the direction of the axial line of the socket, and a portion, 6, arranged at right angles thereto. The spring -p1ns F pass through perforations in the sides of the socket C, and are caused to normally pro ect into the interior of the same by a spr1ng,j, as clearly shown in Fig. 6.

The locking-bolt G is composed,essentially, 0f ashank portion, g, and head portion 9. The head is of substantially the same diameter as the socket C, while the shank is only of a diameter equal to the distance between the faces of the pieces E. On opposite sides of this shank are two cam projections, having each an inclined portion and a straight face, as clearly shown in Fig. 6, these projections serving, in conjunction with the pieces and spring-pins F, to return thebolt after 1t has been inserted. In the application of my device to the ordinary sliding door, the socket 0 being secured to the door, the seal D is either placed in the recess 0 or slipped over the bolt until it is brought up against the head 9 thereof. The bolt is then inserted in the socket, the projections g passing through the grooves 0 formed by the space between the edges of the locking-pieces E, the said grooves being clearly shown in Fig. 3. When the seal is in contact with its seat and the head 9 in contact with the seal, the bolt cannot be forced inward any farther without breaking the seal. The cam projections g are now clear of and farther inward than the rear edge of the portions e of the pieces E, and in the relative position to the spring-pins shown in Fig. 6. The bolt is now given a quarter-turn to the right, the inclined surfaces of the projections 9 raising the pins, which, when the projections are clear of them, are forced inward by the spring f,and prevent any turning of the boltG backward by bearing against the straight faces of the projections on it. The belt cannot be turned in either direction, being locked between the pins and the parts 0 of the lockingpieces E 3 nor can it be drawn out, being locked 7 in that direction by the part c, and it can only be drawn farther inward by breaking the seal. Before the bolt is inserted the door is to be closed, thus bringing the socket in line with one of the apertures b in the post B, and when the bolt is pushed into place and locked its end projects into the aperture b, thus preventing the door from being slid endwise to open it without breaking the seal, as hereinbefore explained. A

When the car has arrived at its destination, and it is desired to unlock it, the bolt D is driven forcibly inward, of course thereby breaking the seal, until the projections g are clear of and farther inward than the lockingpieces E, when the bolt may be turned to bring the projections in line with the grooves 0 and the bolt may be drawn out, thus permitting the door to beopencd.

It is frequently desirable to admit a supply of fresh air to the interior of the car for purposes of ventilation, and to this end I may provide several apertures b in the post B, whereby the door may be locked at different points, thus leaving a suitable space'between the front end thereof and the front post, and nevertheless preventing any further opening of the door.

In case the door is a hinged instead of a sliding one, I place over the mouth of the aperture b a perforated plate, 1), (shown in Fig. 12,) and I make the projections g" on the bolt D extend to the extremity thereof, cutting them away, as shown at in Fig. 8. The aperture b" in plate I) has in its periphery the notches b in line with the grooves e" in the socket, so that the projections may pass through the plate when the bolt is inserted, their cutaway portions 9 being so located as to be in line with the plate, so that the bolt may be turned to lock it in the socket, and when the bolt is so turned that portion of the projections g which is inside of or beyond the plate I) will abut against the projecting edge of said plate and prevent any motion of the door away from the door-post. The cut-away portion is of sufficient length to permit the inward motion of the bolt necessary to unlock it to permit its removal.

Although not necessary,these plates may be advantageously used with the sliding doors,to preventthe apertures Z) in the wooden posts B from wearing too large by constant use.

H represents a chain suitably connected to the door, and secured at its other end to a bail, h, attached to the head of the bolt,to prevent the bolt from being lost when removed :from its socket.

In the modification shown in Figs. 10 to 13, inclusive, of the drawingslhave shown the same devices employed in conjunction with a different form of seal. In this case I represent'sa lockingpin, which passes througha hole, i, in the bolt-head g, and is to have attached to its lower end, when in position, a suitable seal-such, for instance, as the ordinary wire passing through the aperture I and having its ends connected by the usual leaden seal. or theordinary strip of tin passing through the aperture 1 and having. its ends secured by eyelets,-both of these seals being well known and in common use, and any other similar seal may be substituted therefor. The hole 5 in the bolt-head is so arranged that when the bolt is turned to lock it the locking-pin will cover and protect the screw 0 to prevent it from being unscrewed to remove bolt, socket, seal, and all. The seal D performs this function. in the construction previously described.

To prevent the locking-pin from being lost when not in use, I attach to it a chain, J, the other end of which is suitably secured to the door, and I also attach to the door one or more perforated lugs, j, to receive said pin, as clearly shown in Figs. 10 and 13.

My lock may be used in connection with an ordinary padlock by forming the bolt-head g with'a transverse aperture, K, to receive the same, the said padlock preventing the inward motion of the bolt necessary to unlock it.

The seal employed may be of any suitable form and material, and,if in the form shown in Sheet 1 of the drawings, may be attached to the locking-bolt in the manner set forth in Patent No. 24.7,011, granted to me September 13, 1881. It is obvious that one of the pieces Eand one of the projections 9 may be dispensed with, and yet the lock will be operative, and I contemplate the use of such construction; but two of each I deem preferable, as preserving better the balance of the device, and making it more durable and certain in action at every slightly increased cost.

It is also obvious that many mechanical changes in the details of construction may be made without departing from the principle of my invention, and I therefore do not wish to be understood as limiting myself to the precise details of construction herein set forth, and shown in the drawings.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with the socket having L-shaped locking-pieces and spring-pins, arranged substantially as described, of the locking-bolt having cam projections thereon, substantially as and for the purposes specified.

2. The combination, with the socket having L-shaped locking-pieces and spring-pins, arranged substantially as described, of the locking-bolt having cam projections arranged ICO to engage said locking pieces and pins, and

provided with an enlarged head, and a seal arranged to prevent the bolt from being forced inward when locked without breaking the seal, substantially as and for the purposes specified.

3. The combination, with the socket G, having the L-shaped locking-pieces E and springpins F, arranged substantially as described, of the locking-bolt G, having cam projections g and enlarged head y, and the seal D, having an aperture of less diameter than said head, and arranged between the head and 5. The combination, with the door A, havsocket, substantially as and for the purposes ing socket O, as described, and looking-bolt G, set forth. having projections 9 ,0111; away at g, of post B, 4. The combination, with the locking-bolt having recess 1), and plate I), having aperture 5 G and seal D, of the socket O and disk 0, havb substantially as and for the purposes speci- I 5 ing a seat, 0, for the seal, said disk having a fied.

perforation, 0, located in seat 0, to receive JOSEPH CHAPMAN. screw 0 which secures the socket to the door, Witnesses: whereby the seal when in place prevents ao- LEONARD WATSON,

1o cess to said screw, substantially as set forth. A. M. BEsT. 

